1.

What is the solution of the pair of linear equations 37x+43y=123, 43x+37y=117?(a) x = 2,y = 1(b) x = -1,y = 2(c) x = -2,y = 1(d) x = 1,y = 2

Answer»

Correct answer is: (d) x = 1,y = 2

37x+43y=123 ........(1) 

43x+37y=117 ........(2) 

Adding (1) and (2)

X+ y=3 ........(3)

Subtracting (2) from (1)

-x + y=1......(4)

Adding (3) and (4),

2y=4

y=2

⇒ x=1

∴ solution is x=1 and y=2



Discussion

No Comment Found

Related InterviewSolutions